Tool fob cleaning haktdholes



Jam, 29, 1924. 1,482,042

H. L. STALEY TOOL FOR CLEANING HANDHOLES Filed June so; 1921 Patented Jain. 29, 1924.

UNITED STATES HARRISON L. STALEY, OF RICHMOND, VIRGINIA.

r001. FOR CLEANING HANnHoLEs.

Application filed June 30, 1921. Serial No. 481,646.

T all whom it may concern:

Be it'known that I, HARRISON L. STALEY, a citizen of the United States of America, and a resident of Richmond, county of b Henrico, and State of Virginia, have invented certain new and useful Improve. ment-s in Toolsfor Cleaning Handholes, of which the following is a full and clear specification.

1 This invention has relation to that type of hand-tools adapted to clean) or scrape off the gasket-seats surrounding hand-holes in boiler walls and located on the inner face of the walls, and the object of this invention is 1 to provide a simple tool adapted to operate on circular as well as non-circular handholes, as more fully hereinafter set forth.

In the drawing Fig. 1 is a view partly in side elevation and partly in section showing one wayof .carrying out my invention;

Fig. 2 is a vertical section on the line,

2-2 of Fig. 1;

Fig. 3 is a plan View of the thrust devices inlock-ed position;

Fig. 4 is a detail perspective view of the work-end of one of the tools;

Fig. 5 is a view similar to Fig. 2 showing a modified arrangement of the tool-bars. so In the drawing annexed, 10 designates a shaft aflixed to the inner end of which is r a circular head 11 in which are mounted four radially-movable tool-bars 12, the outer end 13 of each of which is shaped to form a cutter or scraper 13 adapted to work against the gasketseat in theboiler-wall 14, each bar being also provided with a.

rigid oritwardlyprojectirig thrust-pin 15 adapted to work agains t the inner edge or 4 face of the hand-hole. The tool-bars are confined in radial grooves formed in the head 11 by means of a cover-plate 16 remov ably bolted to the outer face of the head.

In Figs. 1 and 2, the tool-bars are ar- 4 ranged radially and equidistant from each other, and each adjacent pair of bars is connected together by a bow-spring 17 lying in a chamber formed in the head 11, the ends of the spring being pivotally connected to the tool-bars b-y pivots 18 set in recesses in the bars. The tool-bars and the springs 17 are of such length that when the thrustpins 15 are inserted in the hand-hole, the spring will be under tension to thus hold the pins against the edge of thehand-hole so that as the head is turned by the shaft 10 to cause the cutters13to operate on tlie gasket-seat, the thrust-pins 15 will follow the curvature of the hand-hole, the recession, i. e., inward movement, of each toolbar being compensated for by a correspond.-

ing outward movement of the connected,

where the tool is adapted for circular or elliptical holes, but for holes which are square or substantially square, the companion tool-bars should'be arranged at obtuse angles to each other, as shown in Fig. 5, since it is always desirable that when one ofthe tool-bars is at the extreme inner limit of its movement, its companion toolbar shall be at the extremelimit of its out ward movement. In other words, in a tool adapted for elliptical and circulardholes the tool-bars will be arranged at 90 apart,

Whereas in the type shown'in Fig. "5 the companion tool-bars should be arranged about 120 apart' To hold the tool in position while it is'being rotated, any suitable devices-may be employed. In the present instance, I show a spider-shaped thrust-block 19 provided with feet 20 which are adapted to bear upon the outer face of the boiler-wall at points outside of the hand-hole, this special pressureplate being loosely mounted on the shaft.

'AfiiXed to the outere'nd of the shaft is a collar 21 and afiixed to the shaft at an intermediate point is another collar 22. Slidingly mounted on the shaft between thetwo from the tool-head and thereby permit the a tool to be passed in through the hole in the boiler-wall. After the tool is positioned with its cutters against the gasket-seat and its thrust-pins against the edge of the hole in the boiler-wall, the lever 27 is swung inwardly to the position shown in full lines in Fig. 3, in which position the toggle-links 2526 are over center, the sliding collar 24 is pushed outwardly away from the stationcutting groove 29, as shown in Fig. 4,0r

otherwise shaped or corrugated or serrated, so that these pins shall incidentally act to clean oil the accumulation on the inner edge of the hand-hole. able that the tool-head shall substantially fill the hand-hole, I have provided notches in. a the periphery of the tool-head to receive the thrust-pins when they are at the inner extremities of their movements, thereby permitting the pins to pass within the periphery of the tool-head.

The nature andv scope of the invention having been thus indicated and its preferred embodiment having been specifically described, what is claimed as new is:

1. A tool for the purpose set forth, embodying a shaft carrying a tool-head, said tool-head carrying two pairs of tool-bars adapted to move inwardly and outwardly with respect to the axis of the shaft, and means connecting the tool-bars to cause one of each pair to move outwardly when the other moves inwardly.

2. In a tool for the purpose set forth, a shaft carrying a tool-head, a plurality of tools carried by said head, and means for is connecting the adjacent tools to cause one to move outwardly when the other is forced inwardly. 1

3. In a tool forithe purpose set forth, a shaft carrying a tool-head, a plurality of tools carried by said head, and resilent means for connecting the adjacent tools to cause one to move outwardly when the other is forced inwardly.

4. In a tool for the purpose set shaft carrying a tool-head, a plurality of pairs of tools carried by said head adapted to move inwardly and outwardly with respect to the shaft, and compensating means connecting pairs of these tools to cause one to move outwardly when the other is forced inwardly, each of these tools being provided at itsouter end with a cutter and a thrustpin.

ings in boiler walls,,comprising a shaft carrying a tool-head, a plurality of pa rs of Inasmuch as it is desir-r forth, a

5. In a tool for cleaning hand'hole opentools carried by said head adaptedlo move inwardly and outwardly with respectto the shaft, and compensating means connecting pairs of these tools to cause one to move outwardly when theother is forced incause one to move outwardly when the other is'forced inwardly, each of these tools being provided at its outer end with a cutter and a thrust-pin.

. 7. In a tool for the purpose set forth, a shaft carrying a tool-head, a plurality of pairs of tools carried by said head adapted to move inwardly and outwardly with respect to the shaft, and bow-spring compensating means connecting pairs of these tools to cause one to move outwardly whenthe other is forced inwardly, each of these tools being provided at its outerendwith a cutter and a thrust-pin.

8. Atool for cleaninghand-holes consisting of a shaft carrying a'tool-head adapted to pass through the hand-hole, a support for the shaft and'means for resiliently pressing said support against theouter face of-the boiler-wall to thus draw the tools against the inner face thereof, tool-bars carried by said head adapted toslide inwardly and outwardly with respect to the shaft, said tool-bars being provided with means engaging both the inner face of the boiler-wall I .and the edge of the hand-hole, and resilient means in the head for causingsaid tools to follow the contour of the hand-hole when the head is rotated. 1 p

9. In a tool for cleaning'hand-hole openings in boiler walls, comprising a shaft carrying a tool-head, a plurality of tools carried by said head, said tools having guidepins thereon, and means acting through said tools to hold said guide-pins resiliently against the edge of the hand-hole opening. In testimony whereof I hereunto affix my signature.

HARRISON L. smear. 

